A spokesman said: "We’re aware of a small number of SSE customers currently seeing inaccurate information on their in-home display as a result of an issue with a routine software upgrade carried out last week.

"Customers should rest assured that their billing is completely unaffected as the technical issue only affects the digital display in their home, as opposed to the actual smart meter.

"We will be contacting any affected customers directly with more information and hope to get their in-home displays back to normal as soon as possible."

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